BD9722FV [ROHM]

Fixed Positive Standard Regulator, 2.5VPDSO16, SSOP-16;


型号：	BD9722FV
厂家：	ROHM
描述：	Fixed Positive Standard Regulator, 2.5VPDSO16, SSOP-16 光电二极管输出元件调节器
文件：	总3页 (文件大小：93K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

BD9722FV

Regulators

System regulator for hard disk drive systems

BD9722FV

BD9722FV is a system regulator to convert into two systems of power supply from 5V. One is a synchronous rectification

DC/DC controller. It enables to determine 1.0~3.3V output with external resistor and to provide power supply to a high

current system. Another is a series power supply of an external NPN Tr drive type. It can be set up either 1.8V or 2.5V in

a CTL terminal.

!Applications

HDD, PC

!External dimensions (Unit : mm)

5.0 0.2

!Features

1) High accurate Feed Back voltage ( 2%).

2) Synchronous rectification.

3) Gate drives for external Nch MOSFET’s.

4) Short circuit protector with latch.

5) Under voltage lockout.

0.15 0.1

0.1

0.65

6) Soft start circuit.

0.22 0.1

7) Drives external NPN transistor for Vpp.

8) Variable switch of Vpp voltage (1.8V or 2.5V).

SSOP-B16

!Absolute maximum rating (Ta=25°C)

Parameter

Supply voltage1(Vcc−GND)

Supply voltage2(PVcc1−SW)

Supply voltage3(PVcc2−PGND)

Supply voltage4(PVcc1−GND)

Power dissipation

Symbol

Limits

Unit

−0.3 to +15

−0.3 to +7.5

−0.3 to +15

450 ^∗1

PVcc1−1

PVcc2

PVcc1−2

°C

Operating temperature range

Storage temperature range

Topr

0 to +70

−55 to + 125

Tstg

1:Reduced by 4.5 mW for each increase in Ta of 1 C over 25 C

∗

(when mounted on a board 50.0mm ₊50.0mm ₊1.6mm)

!Recommended operating conditions (Ta=25°C)

Unit

Parameter

Symbol

MIN.

4.2

−

TYP.

MAX.

13.0

6.5

Supply voltage1(Vcc−GND)

Supply voltage2(PVcc1−SW)

Supply voltage3(PVcc2−PGND)

Supply voltage4(PVcc1−GND)

Output pin current

Vcc

−

PVcc1−1

PVcc2

PVcc1−2

6.5

13.0

200

In the case of boost−up of PVcc1, the voltage is approximately twice as much as PVcc2.

∗

1/2

BD9722FV

Regulators

!Electrical characteristics (Unless otherwise noted. Ta=25°C, V_CC=PVcc1=PVcc2=5V, CTL=GND)

Parameter

Symbol

MIN.

TYP.

MAX.

Conditions

Unit

Output voltage

REF

2.4

2.5

2.6

Iref=1mA

CT=150pF

kHz

Oscillator frequency

Maximum duty cycle

Threshold voltage

OSC

MAX

240

3.65

300

3.8

360

3.95

INV=0.9V, CCT=150pF

CC Voltage

Error amplifier reference voltage

Output rise/Fall time

Output voltage1

NON

Tr/Tf

Vpp1

Vpp2

IvppB

0.980 1.000 1.020

CTL=GND

Cgate=2000pF,

2SC2411K, CTL Open/High

2SC2411K, CTL Low

VppB=3.2V

−

2.5

1.8

−

PV^CC₊0.1 PVCC ₊0.9

2.4

1.7

2.6

1.9

−

Output voltage2

VppB pin maximum current

Designed Guarantee (Outgoing inspection is not done on all products.)

∗

!Block Diagram

Vcc

225mV

PVcc2

Vcc

2.2V

4.0V

Vcc

U.V.L.O

Vref

PVcc2

Vcc

PVcc1

Vref

INV

Vref

3.3V

NON

U.V.L.O

Delay

PGND

Vref

Vcc

0.7V

OSC

CCT

NON

VppB

Vcc

2.5V or 1.8V

Vpp

B.G

U.V.L.O

Vref

GND

Vref

2.1V

CTL

U.V.L.O

0.8V

Vcc

3.8V

Hys=300mV

2/2

Appendix

Notes

No technical content pages of this document may be reproduced in any form or transmitted by any

means without prior permission of ROHM CO.,LTD.

The contents described herein are subject to change without notice. The specifications for the

product described in this document are for reference only. Upon actual use, therefore, please request

that specifications to be separately delivered.

Application circuit diagrams and circuit constants contained herein are shown as examples of standard

use and operation. Please pay careful attention to the peripheral conditions when designing circuits

and deciding upon circuit constants in the set.

Any data, including, but not limited to application circuit diagrams information, described herein

are intended only as illustrations of such devices and not as the specifications for such devices. ROHM

CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any

third party's intellectual property rights or other proprietary rights, and further, assumes no liability of

whatsoever nature in the event of any such infringement, or arising from or connected with or related

to the use of such devices.

Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or

otherwise dispose of the same, no express or implied right or license to practice or commercially

exploit any intellectual property rights or other proprietary rights owned or controlled by

ROHM CO., LTD. is granted to any such buyer.

Products listed in this document use silicon as a basic material.

Products listed in this document are no antiradiation design.

The products listed in this document are designed to be used with ordinary electronic equipment or devices

(such as audio visual equipment, office-automation equipment, communications devices, electrical

appliances and electronic toys).

Should you intend to use these products with equipment or devices which require an extremely high level of

reliability and the malfunction of with would directly endanger human life (such as medical instruments,

transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other

safety devices), please be sure to consult with our sales representative in advance.

About Export Control Order in Japan

Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control

Order in Japan.

In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)

on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.

Appendix1-Rev1.0

BD9722FV [ROHM]

相关型号：

BD9730KV

BD9730KV-E1

BD9730KV-E2

BD9731KV

BD9733KN

BD9733KN-E2

BD9734KN

BD9734KN-E2

BD9738KN

BD9738KN-E2

BD9739KN

BD9739KN-E2